Erw Low-carbon Steel Tubes For Boilers And Heat Exchangers
Astm a178 grade a tubing offers cost-effective erw low-carbon steel solutions for boilers and heat exchangers.
Erw Low-carbon Steel Tubes For Boilers And Heat Exchangers
Astm a178 grade a tubing offers cost-effective erw low-carbon steel solutions for boilers and heat exchangers.
ASTM A178 Grade A Tubing, also known as ASME SA178 Grade A, is electric-resistance-welded (ERW) low-carbon steel tubing designed for high-temperature applications, including boiler tubes, superheater flues, heat exchanger tubes, and safe ends. Compliant with ASTM A178/A178M and ASME SA178 standards, these tubes offer excellent weldability and cost-effectiveness for low-pressure environments in power plants, chemical industries, and manufacturing facilities.
Manufactured using the ERW process, ASTM A178 Grade A Tubing is available in outside diameters from 1/2 to 5 inches [12.7–127 mm] and minimum wall thicknesses from 0.035 to 0.360 inches [0.9–9.1 mm]. Post-weld heat treatment at 1650°F [900°C] or higher ensures weld integrity and stress relief, while coatings like varnish or 3LPE enhance corrosion-resistant ERW boiler tubes for extended durability in harsh conditions.
These tubes undergo rigorous testing, including flattening, flaring, tension, reverse flattening, and hydrostatic or nondestructive electric tests, to ensure compliance with ASTM A178/ASME SA178 standards. With a low-carbon composition, ASTM A178 Grade A Tubing provides a minimum tensile strength of 325 MPa and yield strength of 180 MPa, making it ideal for low-pressure applications (up to 350 psi [2.4 MPa]).
Compared to seamless ASTM A179 or A192 tubes, ASTM A178 Grade A Tubing offers a cost-effective solution with reliable performance for boiler and heat exchanger systems. Its versatility supports applications like boiler flues, air preheaters, and safe ends, addressing challenges such as corrosion and thermal stress.
ASTM A178 Grade A Tubing provides engineers with reliable, high-quality solutions for steam generation and heat transfer systems, ensuring safety, efficiency, and longevity in critical infrastructure projects.
| Grade | C (% max) | Mn (% max) | P (% max) | S (% max) | Si (%) |
|---|---|---|---|---|---|
| Grade A | 0.06–0.18 | 0.27–0.63 | 0.035 | 0.035 | - |
The low-carbon composition ensures excellent weldability and corrosion resistance for ASTM A178 Grade A Tubing in high-temperature boiler applications.
| Grade | Tensile Strength (MPa min) | Yield Strength (MPa min) | Elongation (% min) | Hardness (HRB max) |
|---|---|---|---|---|
| Grade A | 325 | 180 | 35 | 77 |
These properties ensure ASTM A178 Grade A Tubing delivers reliable performance in low-pressure boiler and heat exchanger applications.
| Feature | ASTM A178 Grade A | ASTM A179 | ASTM A192 |
|---|---|---|---|
| Manufacturing Process | ERW | Seamless | Seamless |
| Diameter Range | 1/2–5 inches | 1/8–3 inches | 1/2–7 inches |
| Wall Thickness | 0.035–0.360 inches | 0.035–0.360 inches | 0.085–1.000 inches |
| Applications | Boilers, superheaters, heat exchangers | Heat exchangers, condensers | High-pressure boilers |
| Pressure Rating | Up to 350 psi | Low to medium pressure | High pressure |
| Cost | Low | Moderate to High | High |
ASTM A178 Grade A Tubing offers a cost-effective ERW solution compared to seamless ASTM A179 and A192 tubes, with reliable performance for low-pressure applications. Below is a comparison of key features.
Low-carbon ERW process ensures strong, defect-free welds.
Available from 1/2 to 5 inches for diverse applications.
Coatings like 3LPE enhance durability in harsh environments.
Suitable for low-pressure boiler applications.
Lower cost compared to seamless boiler tubes.
Meets ASTM A178 and ASME SA178 standards.
Explore ASTM A178 Grade A Tubing with targeted long-tail keywords for specifications, applications, and materials.
Note: ASTM A178 Grade A Tubing meets international standards, ensuring high performance and reliability. Contact suppliers for detailed specifications.
ASTM A178 Tubes are engineered for high-temperature performance and corrosion resistance, making them ideal for boiler tubes, superheater flues, heat exchangers, boiler flues, safe ends, and air preheaters in critical infrastructure projects.
Used in water walls and economizers for steam generation in industrial boilers.
Increases steam temperature in superheater sections for enhanced efficiency.
Facilitates heat transfer in industrial heat exchanger systems.
Conveys combustion gases in boiler systems with high durability.
Joins tubes of different materials or thicknesses in boiler systems.
Preheats combustion air using flue gases for improved efficiency.
Why Choose ASTM A178 Tubes? Their high-temperature performance and cost-effective ERW design make ASTM A178 Tubes ideal for boiler, superheater, and heat exchanger applications, ensuring reliable operation.
